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Finding the Fourth Proportional to 386,383.77, 532,593.74 and 304,578.72

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Solution

The fourth proportional to 386,383.77, 532,593.74 and 304,578.72 is: 419,833.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,383.77 : 532,593.74 = 304,578.72 : x
  2. Step 2: Convert to fraction form
    386,383.77/532,593.74 = 304,578.72/x
  3. Step 3: Cross multiply
    386,383.77x = 532,593.74 × 304,578.72
  4. Step 4: Simplify right side
    386,383.77x = 162,216,718,086.32
  5. Step 5: Solve for x
    x = 162,216,718,086.32/386,383.77
  6. Step 6: Final answer
    x = 419,833.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.